20.16

java.lang.Runtime

THE PACKAGE JAVA.LANG

This method never returns normally.

See also the method

exit

 ( 20.18.11) of class

System

, which is the conven 

tional and convenient means of invoking this method.

20.16.3

public Process exec(String command)

throws IOException, SecurityException,

IndexOutOfBoundsException

The

command

 argument is parsed into tokens and then executed as a command in a

separate process. The token parsing is done by a

StringTokenizer

 ( 21.10) cre 

ated by the call:

new StringTokenizer(command)

with no further modification of the character categories.

This method behaves exactly as if it performs the call:

exec(command, null)

See  20.16.4.

20.16.4

public Process exec(String command, String envp[])

throws IOException, SecurityException,

IndexOutOfBoundsException

The

command

 argument is parsed into tokens and then executed as a command in a

separate process with an environment specified by

envp

. The token parsing is

done by a

StringTokenizer

 ( 21.10) created by the call:

new StringTokenizer(command)

with no further modification of the character categories.

This method breaks the

command

 string into tokens and creates a new array

cmdarray

 containing the tokens in the order that they were produced by the string

tokenizer; it then behaves exactly as if it performs the call:

exec(cmdarray, envp)

See  20.16.6.

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